Is this vest warm enough for winter?

It works as a mid-layer in cold weather, not as a standalone winter coat. The 85% down fill traps heat well, but sleeveless design leaves arms exposed. Pair it with a long-sleeve base and a shell in freezing conditions.

Does it run true to size?

It is cut loose, so it fits roomier than a standard vest. Most shoppers can take their usual size for layering over a hoodie. Those wanting a closer fit may size down.

Can it be worn in rain?

The polyester shell is water repellent and handles light rain and drizzle. It is not waterproof, and down loses loft if it gets soaked. Seek shelter in heavy rain.

How should I wash it?

Machine wash at 30 degrees with a mild detergent. Tumble dry on low with clean tennis balls to break up clumps and restore loft. Avoid fabric softener and high heat.

Is it real down or synthetic?

It uses a down and feather blend: 85% down and 15% feathers. That gives more warmth per gram than polyester fill, but it needs more careful washing and drying.

Therma-FIT is Nike's name for its cold-weather insulation technology. On this vest it refers to the down blend and shell working together to retain body heat.